In a cast iron pan, heat oil 1 minute.
Then add potatoes, onions, salt, garlic, both peppers; stir.
Let cook 10 minutes. Let potatoes stick before you stir.
Reduce heat and cook 20 minutes. Stir stir a scrape.
Add ½ cup water, then cook 5 minutes.
Add ½ cup more, then cook 5 minutes.
Add last ½ cup of water and green onions.
Stir and cook 5 minutes. Remove from heat and serve.